Ubaldo Matildo Fillol, nicknamed el Pato, is an Argentine football coach and former goalkeeper. He took part in the 1974, 1978 and 1982 World Cups representing the Argentine national team. He also played in the South American qualifiers for the 1986 World Cup, but he was finally not chosen for the final team that played in Mexico. His usually considered to one of the greatest Latin American keepers. In 1977 Fillol was awarded the Footballer of the Year of Argentina award, being the first goalkeeper ever to receive the distinction. At the 1978 World Cup, Fillol wore the number 5 jersey, instead of 1 which is the standard for goalkeepers. This happened because Argentina, at that time, gave players their numbers alphabetically. The number 1 jersey was worn by Norberto Alonso. For the same reason, Fillol wore the number 7 jersey at the 1982 tournament while Osvaldo Ardiles wore the number 1. This practice was last permitted in 1986. 

July 21st, 1950 in Buenos Aires Province (Age 73)